Poor old Grandma! It had rained every day since she came to stay with Mother, Father, Morgan, the baby and Tailcat. But just as everyone was getting really fed up of being stuck indoors, the most amazing thing happened! Suddenly the house started to shudder and rock - and then just floated off down the street and off to sea. Before long, the family find themselves on the wackiest adventure ever! Hungry cannibals, blood-thirsty pirates, a kidnapping and buried treasure are just some of the hair-raisers in store. Will the family ever see dry land again or will evil One-Eyed Jake cut them into a million tiny pieces?